Hierarchical quantum master equation approach to electronic-vibrational coupling in nonequilibrium transport through nanosystems

Beitrag in einer Fachzeitschrift


Details zur Publikation

Autorinnen und Autoren: Schinabeck C, Erpenbeck A, Haertle R, Thoss M
Zeitschrift: Physical Review B
Jahr der Veröffentlichung: 2016
Band: 94
Heftnummer: 20
ISSN: 1098-0121


Abstract

Within the hierarchical quantum master equation (HQME) framework, an approach is presented, which allows a numerically exact description of nonequilibrium charge transport in nanosystems with strong electronic-vibrational coupling. The method is applied to a generic model of vibrationally coupled transport considering a broad spectrum of parameters ranging from the nonadiabatic to the adiabatic regime and including both resonant and off-resonant transport. We show that nonequilibrium effects are important in all these regimes. In particular, in the off-resonant transport regime, the inelastic cotunneling signal is analyzed for a vibrational mode in full nonequilibrium, revealing a complex interplay of different transport processes and deviations from the commonly used G0/2 rule of thumb. In addition, the HQME approach is used to benchmark approximate master equation and nonequilibrium Green's function methods.


FAU-Autorinnen und Autoren / FAU-Herausgeberinnen und Herausgeber

Erpenbeck, André
Professur für Theoretische Physik mit dem Schwerpunkt Elektronentransport in Molekülen
Schinabeck, Christian
Professur für Theoretische Physik mit dem Schwerpunkt Elektronentransport in Molekülen
Thoss, Michael Prof. Dr.
Professur für Theoretische Physik mit dem Schwerpunkt Elektronentransport in Molekülen


Zusätzliche Organisationseinheit(en)
Exzellenz-Cluster Engineering of Advanced Materials


Einrichtungen weiterer Autorinnen und Autoren

Georg-August-Universität Göttingen


Forschungsbereiche

B Nanoelectronic Materials
Exzellenz-Cluster Engineering of Advanced Materials


Zitierweisen

APA:
Schinabeck, C., Erpenbeck, A., Haertle, R., & Thoss, M. (2016). Hierarchical quantum master equation approach to electronic-vibrational coupling in nonequilibrium transport through nanosystems. Physical Review B, 94(20). https://dx.doi.org/10.1103/PhysRevB.94.201407

MLA:
Schinabeck, Christian, et al. "Hierarchical quantum master equation approach to electronic-vibrational coupling in nonequilibrium transport through nanosystems." Physical Review B 94.20 (2016).

BibTeX: 

Zuletzt aktualisiert 2019-21-03 um 10:38